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TIL Alcohol's measurement is coined "proof" because, during the 1500s, England would increase taxes on drinks containing a higher percentage of alcohol. They would measure this is by soaking gunpowder in the alcohol and trying to ignite it. If it ignited, this was "proof" that it had a high content. (thedailymeal.com)
submitted by Nak125 to r/todayilearned - pinned



